Wallpaper border applicator



FIG. 1 is a perspective back view of the wallpaper border applicator thereof;

FIG. 2 is a perspective frontal view thereof; and,

FIG. 3 is a bottom planar view thereof.

The broken line showing of portions of the wallpaper border applicator forms no part of the claimed design. 

The ornamental design for a wallpaper border applicator, as shown and described. 